Grunts on the line, where the enemy wants them dead, still goof off - even knowing that by letting their guard down they might die.
What I liked about doing a soundtrack is that it's almost the opposite of any kind of normal recording that a band does, because it's very much a restricted, narrow... And I kind of like that, I find it exciting to work within these things.
I also know that in the second movie, the sequel, Eric made some huge advances with the robot suit. That just made it even better. You put the suit on and moved your arms then the robot's arms would move in sync with yours.